Improvement in check foe picker-staff



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'ro ALL PERSONS fro WHOM THESE PRESENTS MAY COME:

Be it known that I, ELISHA ROBBINS, of Worcester, in the county of Worcester, and'Statc of Massachusetts, have invented a new and useful Improvement in Looms for Weaving; and I do hereby declare `the same to be fully described in the following speciieation, and represented in the accompanying drawings, of which-- Figure 1 is a side elevation, and v i Figure 2 a top view of a leorn-lay'and picker-staff, `with my invention applied thereto.

In such drawings,A A denotes the Shuttle-box, anclB the sword of the lay. 'Ihc picker-stati` is represented at C, as suspended from the race-beam by a hanger, D, and as jointed at its foot to a radialar1n, E, extended from the sword of the lay. AA. bow, or inverted arch-spring, D", also connects the picker-statt` with the sword B,

such s rin at or near its ends bein fastened to suehnarts. Furthermore another s rino-E formed asshown P g i l a a a .t

in' the drawings, is iiXed-to the shuttle-box, and extends over it and toward the picker-stan', in manner as repre? sented. The arch-spring is for retraeting the picker-staff, after a throw ot' the shuttle thereby, and it-'not only does this, but operates with the spring or brake E to arrest thestaffw'hen nearthe outer'end of the shuttle-box.

The shuttle, at the termination vof its stroke or advanee,is arrested by aspring, ,extended from the inner sideA of the shuttle-binder f. A Y

The object of my invention is to gradually arrest the picker-stati' at and near the termination 'of each'rctraction ofit, and to bring itinto a position for acting on the shuttle. This may be' `accomplished by the-springbrake El, or more. properly by such .and the arch-spring D", as the brake will check the back movement of the statt', and the arch-spring, by its contractile power, will restore the picker-staii' to its nornlal position, or that which it should have prior to throwing the shuttle. The-brake is so arranged aS to act' on the uppcrend of the statt', and furthermore, the brake is applied to the end of theshuttle-box by means of screws' bf() going through a slotfc, in the brake, the same being as represented in figs. 3 and 4, the former being a vertica'l's'eetion, and

the latter an end View ofthe box. This application of the brake to thesaid boxlcnables the brake to be adjusted vertically, so as to actupon thestaff to the best advantage. The arch-spring wilLoper-a'te aman'ner to eie'ct the gradual arrest of the picker-stati', the adjustable brake being necessary for the full'acomplishmcnt thereof. Sometimes the brake alone will suffice for the purpose, although it will not eifectwith certainty the after uiovement of the staff toward the shoulder, so as to be ready for its throw. With `the adjustable f brake, or thcsame' and the arched spring, lthereis a great Saving in wear of piekensand their staffs.

Iiclaim the arrangement andvapplication of the adjustable spring-'brake with the picker-staff' and shuttle box, as described. v ,l v

I also claim the combination and arrangement'of the adjustable spring-brake and the arch-spring, with the shuttle-box, the picker, and` the sword ofthe lay,.thc vWhole being substantially as specified.

- ELISIIA ROBBINS.

ll'itnesses:

R. H. EDDY, F. P. HALE, Jr. 

